无抗试管是脉搏试管 cryocooler 的关键部件之一。它不仅在脉搏试管 cryocooler 的效率上,而且在线性压缩机的效率上有大影响。同时,因为狂暴的流动,预言一个无抗试管的阻抗是很困难的。在这篇论文,用一个伪狂暴的模型,无抗试管被优化匹配驾驶的一台线性压缩机脉搏试管 cryocooler。试验性的结果证明这个模型能预言阻抗相当好。与 127 W 输入电力,脉搏试管 cryocooler 获得在 77 K 的温度使力量凉下来的 9.4 W。整个系统的相对 Carnot 效率到达 19.8% 。
The inertance tube is one of the key components of a pulse tube cryocooler. It has great influence not only on the efficiency of the pulse tube cryocooler, but also on the efficiency of the linear compressor. Meanwhile, it is very difficult to predict the impedance of an inertance tube because of the turbulent flow. In this paper, using a quasi-turbulent model, the inertance tube is optimized to match a linear compressor driven pulse tube cryocooler. Experimental results show that this model can predict the impedance quite well. With 127 W input electric power, the pulse tube cryocooler obtains 9.4 W cooling power at a temperature of 77 K. The relative Carnot efficiency of the whole system reaches 19.8%.